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Graphene compound for lubricating oil additive, preparation method and application thereof

A kind of compound and graphene technology, applied in the direction of lubricating composition, petroleum industry, etc., can solve the problem of "increased agglomeration"

Active Publication Date: 2021-04-09
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The study found that lipophilic graphene was prepared by introducing long-chain alkyl groups into graphene oxide in situ. However, the "agglomeration" phenomenon of the functionalized graphene increased significantly after being placed for more than 5 days.

Method used

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  • Graphene compound for lubricating oil additive, preparation method and application thereof
  • Graphene compound for lubricating oil additive, preparation method and application thereof
  • Graphene compound for lubricating oil additive, preparation method and application thereof

Examples

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Embodiment 1

[0059] The present embodiment provides a kind of graphene compound that is used for lubricating oil additive, and its structural formula is: Γ~N~R, wherein, Γ is 5 layers of graphene oxide, and N is the PAMAM dendrimer polymer G1 of 1 generation, R It is polyisobutylene succinic anhydride with a molecular weight of 3000.

[0060] The present embodiment also provides the preparation method of above-mentioned graphene compound, specifically as follows:

[0061] (1) Add 200mL of DMF and 1g of graphene oxide into a 500ml three-neck flask, seal it well, and ultrasonicate for half an hour; control the temperature below 10°C and dropwise add 1-hydroxybenzotriazole (3.1g) and 1-(3- DMF solution of dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (2.5g) and methanol solution of 1g PAMAM dendrimer (G1); after dripping, under nitrogen protection conditions, magnetically stirred and reacted at room temperature for 48 hours , transferred to a one-necked bottle and rotary evaporated ...

Embodiment 2

[0065] The present embodiment provides a kind of graphene compound that is used for lubricating oil additive, and its structural formula is: Γ~N~R, wherein, Γ is 7 layers of graphene oxide, N is the PAMAM dendrimer polymer G2 of 2 generations, R It is polyisobutylene succinic anhydride with a molecular weight of 1000.

[0066] The present embodiment also provides the preparation method of above-mentioned graphene compound, specifically as follows:

[0067] (1) Add 200mL of DMF and 1g of graphene oxide into a 500ml three-necked flask, seal it well, and ultrasonicate for half an hour; control the temperature below 10°C and add dropwise 1-hydroxybenzotriazole (3.09g) and 1-(3- DMF solution of dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (2.5g) and methanol solution of 2g PAMAM dendrimer (G2); dropwise under nitrogen protection conditions, magnetic stirring normal temperature reaction for 48 hours , transferred to a one-necked bottle and rotary evaporated to remove DMF,...

Embodiment 3

[0071] The present embodiment provides a kind of graphene compound that is used for lubricating oil additive, and its structural formula is: Γ~N~R, wherein, Γ is 6 layers of graphene oxide, and N is the PAMAM dendrimer polymer G3 of 3 generations, R It is polyisobutylene succinic anhydride with a molecular weight of 3000.

[0072] The present embodiment also provides the preparation method of above-mentioned graphene compound, specifically as follows:

[0073] (1) Add 200mL of DMF and 1g of graphene oxide into a 500ml three-necked bottle, seal it well, and ultrasonicate for half an hour; control the temperature below 10°C and add 1-hydroxybenzotriazole (2.1g) and 1-(3- DMF solution of dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (1.42g) and methanol solution of 1.5g PAMAM dendrimer (G3); dropwise under nitrogen protection conditions, magnetic stirring normal temperature reaction 48 hours, transferred to a single-necked bottle to remove DMF by rotary evaporation, the...

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Abstract

The invention relates to the technical field of lubricating oil additives, in particular to a graphene compound for a lubricating oil additive, a preparation method and application of the graphene compound. The present invention provides an oil-soluble graphene compound having a structural formula of Gamma-N-R, where Gamma is graphene oxide, N is an aliphatic or aromatic bridging compound having -NH2 or -OH end groups, or an aliphatic or aromatic bridging compound having -NH2 at one end and -OH at the other end, and R is a compound containing a polyisobutylene succinic anhydride structure. The graphene compound has excellent oil solubility, can be well dispersed in lubricating oil, and has excellent wear resistance and extreme pressure property; meanwhile, sulfur, phosphorus, chlorine and other elements harmful to the environment are not contained, and environmental friendliness is achieved; the preparation process is simple, the reaction conditions are mild, and no special requirements are needed for chemical equipment; and the graphene compound can be applied to lubricating oil, lubricating grease and other fields.

Description

technical field [0001] The invention relates to the technical field of lubricating oil additives, in particular to an oil-soluble graphene compound used as a lubricating oil additive and a preparation method and application thereof. Background technique [0002] Graphene is a new type of two-dimensional atomic crystal closely packed by carbon atoms, and its basic structure is SP 2 The six-membered benzene-like unit formed by hybridized carbon atoms is currently the thinnest two-dimensional material in the world, with a single-layer thickness of only 0.3354nm. First discovered by Novoselov. Graphene has an ultra-thin sheet structure (easy to enter the friction contact surface), excellent mechanical properties and self-lubricating properties, so its application research in lubricating additives has attracted attention. A large number of studies have found that adding an appropriate amount of graphene as a lubricating additive can not only reduce the friction coefficient, but...

Claims

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Application Information

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IPC IPC(8): C10M145/12C10N30/06
CPCC10M145/12C10M2201/041C10M2209/086
Inventor 鄂红军李万英雷凌金佳佳徐夏歌
Owner CHINA PETROLEUM & CHEM CORP
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